Kinetics and Particle Formation Mechanism of Zinc Oxide Particles in Polymer-Controlled Precipitation from Aqueous Solution

Taubert, Andreas; Glaßer, Gunnar; Palms, Dennis

doi:10.1021/la011799a

Cited by 135 publications

(141 citation statements)

References 57 publications

(78 reference statements)

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“…The most commonly used approach is that involving SDAs ranging from simple molecules, such as amines [13][14][15][16] and anionic species, [17][18][19][20][21] to polymers (DBCP, [22][23][24][25][26][27][28][29] PVP, [30][31][32][33][34][35][36][37][38][39][40][41][42] PAM, 29 and PAH 43 ) and biomolecules. [44][45][46][47][48][49][50][51][52] The SDAs have been shown to affect the morphology of ZnO by imposition of effects on nucleation and/or growth of the crystals.…”

Section: Introductionmentioning

confidence: 99%

Direct evidence of ZnO morphology modification via the selective adsorption of ZnO-binding peptides

et al. 2011

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Biomolecule-mediated ZnO synthesis has great potential for the tailoring of ZnO morphology for specific application in biosensors, window materials for display and solar cells, dye-sensitized solar cells (DSSCs), biomedical materials, and photocatalysts due to its specificity and multi-functionality. In this contribution, the effect of a ZnO-binding peptide (ZnO-BP, G-12: GLHVMHKVAPPR) and its GGGC-tagged derivative (GT-16: GLHVMHKVAPPRGGGC) on the growth of ZnO crystals expressing morphologies dependent on the relative growth rates of (0001) and (10 10) planes of ZnO have been studied. The amount of peptide adsorbed was determined by a depletion method using oriented ZnO films grown by Atomic Layer Deposition (ALD), while the adsorption behavior of G-12 and GT-16 was investigated using XPS and a computational approach. Direct evidence was obtained to show that (i) both the ZnO-BP identified by phage display and its GGGC derivative (GT-16) are able to bind to ZnO and modify crystal growth in a molecule and concentration dependent fashion, (ii) plane selectivity for interaction with the (0001) versus the (10 10) crystal planes is greater for GT-16 than G-12; and (iii) specific peptide residues interact with the crystal surface albeit in the presence of charge compensating anions. To our knowledge, this is the first study to provide unambiguous and direct quantitative experimental evidence of the modification of ZnO morphology via (selective and nonselective) adsorption-growth inhibition mechanisms mediated by a ZnO-BP identified from phage display libraries.

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Section: Introductionmentioning

confidence: 99%

Direct evidence of ZnO morphology modification via the selective adsorption of ZnO-binding peptides

et al. 2011

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“…The ability to influence the morphology and phase of an inorganic precipitate has important technological implications [34], because some physical properties of crystalline materials such as the brilliance of color pigments or the dielectric function of electroceramics depend on crystal habit, grain size, grain size distribution, impurities, or content of polymorphous modifications. Control of nucleation, crystal growth, and organization of crystals to a superstructure ("texture") make these physical properties tunable and are thus important for technical application [35].…”

Section: Introductionmentioning

confidence: 99%

Shape Controlled Synthesis of Barium Carbonate Microclusters and Nanocrystallites using Natural Polysachharide – Gum Acacia

Sreedhar¹,

Vani²,

Devi³

et al. 2012

MATERIALS

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Different morphosynthesis strategies for BaCO 3 using natural polysaccharide-gum acacia (GA) as templating species are presented. The influence of GA with different functionalities such as -OH, -COOH and -NH 2 on the crystallization and structure formation was investigated. Some interesting morphologies, including rods, dumbbell, double-dumbbell and flower like clusters, can be readily generated by using GA as cooperative modifier in the mineralization process, under the conditions of 0.5%, 1% of templating species and at ambient temperature. The modifier GA and its concentration is the key factor in this system. In continuation, morphology was also examined for mixed metal carbonates (Ba-LaCO 3 , Ba-TbCO 3 ). The possible formation mechanism of the nanocrystallites is discussed. Structural characterization of the synthesized materials was investigated by Powder X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), Energy Dispersive Analysis (EDAX), Transmission Electron Microscopy (TEM), Thermogravimetric analysis (TGA) coupled Mass (MS) and Fourier Transform Infrared spectroscopy (FT-IR).

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“…This is in contrast to for example ZnO where both synthetic polymers and short peptides lead to well-defined particles with a narrow size distribution. [30][31][32][33]38,39 TEM therefore shows that the amino acids used as growth modifiers are inefficient in the sense that no uniform particle morphology and particle size is obtained. a The control sample is composed of 94% magnetite and 6% goethite.…”

Section: Resultsmentioning

confidence: 99%

“…28 Similar interactions exist for other inorganic/ peptide combinations, 29 but even the mineralization of a simple compound like ZnO is more complex with peptides 30,31 than with synthetic polymers. [32][33][34] As a result, there is a need to further study the role of biomimetic additives on the mineralization of iron oxides.…”

Section: Introductionmentioning

confidence: 99%

Amino Acids in Iron Oxide Mineralization: (Incomplete) Crystal Phase Selection Is Achieved Even with Single Amino Acids

et al. 2008

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Iron oxides are important minerals in biology and materials science. Using biomimetic synthesis, a variety of iron oxides have been fabricated. However, it is still not clear how growth modifiers like amino acids and peptides select different crystal phases of a complex material like iron oxide. The current paper shows that already with single amino acids, (incomplete) crystal phase selection is achieved in vitro. In particular, L-histidine, L-threonine, and L-cysteine favor the formation of unstable crystal phases like ferrihydrite or lepidocrocite, although sometimes only at high amino acid concentrations. Other amino acids like L-valine have only minor effects when compared to control samples grown in the absence of amino acids. The effects of the amino acids can be rationalized via kinetic trapping and different interaction strengths of the amino acids with the growing iron oxide particles. The effects of the amino acids on the particle morphologies are less significant. The paper therefore shows that single amino acids can be a valuable tool for the materials chemist to fabricate and stabilize even unstable iron oxide crystal phases.

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Kinetics and Particle Formation Mechanism of Zinc Oxide Particles in Polymer-Controlled Precipitation from Aqueous Solution

Cited by 135 publications

References 57 publications

Direct evidence of ZnO morphology modification via the selective adsorption of ZnO-binding peptides

Direct evidence of ZnO morphology modification via the selective adsorption of ZnO-binding peptides

Shape Controlled Synthesis of Barium Carbonate Microclusters and Nanocrystallites using Natural Polysachharide – Gum Acacia

Amino Acids in Iron Oxide Mineralization: (Incomplete) Crystal Phase Selection Is Achieved Even with Single Amino Acids

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